When I input any family name and 600 in the 3rd prompt, the second $500 prompt fails with the message "Please Input $500/ Family with 1 student". The user should be allowed to skip that field, but the code is halting me.

I'm ok if you tell me this is not a CSS error, I'll go hunt down a forms forum.

@swmagic; kudos for having the right attitude. I've seen more than one thread here where the member does not want to fix the mark-up that the CSS and javascript are on top of. Kind of like saying "I want to fix my rickity house but not the crumbling foundation" or " I want my car to keep its great paint job but not remove the rust beneath it". Sometimes a quick "patch job" might seem like the way to go to some, but your willingness to do things right shows you are a Professional.